Improvement in furnace-pots



JOHN BALLOU.

improvement in Furnace-Pots.

N0 H5 677 Patentedlune 6,1871.

" Wtuzassaz 21:15am (Lam. l Wwb. =3? W Unrrnn STATns JOHN BALLOU, OF BOSTON, MASSACHUSETTS.

:Mpnovamsnr IN FURNACE-=POT8t Specification forming part of Letters Patent No. 115,677, dated June 6, 1871-.

To all whom it may concern:

Be it known that I, JOHN BALLOU, of Boston, in the county of Sufiolk and State of Massachusetts, have invented a new and Improved Furnace-Pot; and I do hereby declare that the following is a full, clear and exact description thereof, which will enable others skilled in the art to make and use the same, reference being bad to the accompanying drawing forming part of this specification, in which the drawing represents a centralvertical section of the improved furnace-pot.

This invention has for its object to prevent the escape of noxious gases through the pores fd l/ ofcast-iron furnace-pots and consists in pro- Tdneing such pots with external, internal, or

embedded wrought-iron .packets. The closel pored wrought lIOll prevents the escape oi the 

